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Effects of Dexmedetomidine on Microcirculation of Kidney Transplant Recipient

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National Taiwan University

Status and phase

Completed
Phase 4

Conditions

Kidney Disease

Treatments

Drug: Dexmedetomidine

Study type

Interventional

Funder types

Other

Identifiers

NCT02707809
201512039MINB

Details and patient eligibility

About

The microcirculation is altered in acute kidney injury and chronic kidney disease. The microcirculation is poor in end-stage renal disease patients receiving hemodialysis. Kidney transplant can improve the life quality of these patients. However, surgical stress and inflammatory response may cause microcirculatory dysfunction and intestinal injury. Moreover, the transplanted kidney would suffer from the ischemia and reperfusion injury, and it may result in acute kidney injury. In ischemia and reperfusion injury animal model, dexmedetomidine has been proven to attenuate kidney and intestinal injury. In our previous study of surgical stress and pain stimulation rat model, we found that dexmedetomidine attenuate the intestinal microcirculatory dysfunction. In patients receiving coronary artery bypass graft surgery, dexmedetomidine increases urine output and decreases postoperative serum level of neutrophil gelatinase-associated lipocalin.

This study aims to investigate whether perioperative dexmedetomidine infusion may attenuate microcirculatory dysfunction, kidney injury, and intestinal injury for patients undergoing kidney transplant.

Full description

The microcirculation is altered in acute kidney injury and chronic kidney disease. The microcirculation is poor in end-stage renal disease patients receiving hemodialysis. Kidney transplant can improve the life quality of these patients. However, surgical stress and inflammatory response may cause microcirculatory dysfunction and intestinal injury. Moreover, the transplanted kidney would suffer from the ischemia and reperfusion injury, and it may result in acute kidney injury. In ischemia and reperfusion injury animal model, dexmedetomidine has been proven to attenuate kidney and intestinal injury. In our previous study of surgical stress and pain stimulation rat model, we found that dexmedetomidine attenuate the intestinal microcirculatory dysfunction. In patients receiving coronary artery bypass graft surgery, dexmedetomidine increases urine output and decreases postoperative serum level of neutrophil gelatinase-associated lipocalin. The aim of this study is to investigate whether perioperative dexmedetomidine infusion may attenuate microcirculatory dysfunction, kidney injury, and intestinal injury for patients undergoing kidney transplant.

This is a randomized, single-blind, prospective, controlled clinical trial. The patients will be randomly assigned to the control group or dexmedetomidine group. After induction of anesthesia, the patients in the control group will receive regular perioperative care. The patients in the dexmedetomidine group will receive perioperative dexmedetomidine continuous intravenous infusion after induction of anesthesia till 2 hours after the end of the operation. All patients will receive sublingual microcirculation examination, laboratory tests of blood urine nitrogen, creatinine, and enzyme-linked immunosorbent assays of serum level of endocan, diamine oxidase, and neutrophil gelatinase-associated lipocalin at preset time points. The urine level of neutrophil gelatinase-associated lipocalin will also be measured. The vital signs and urine output will be recorded. The difference between the two groups will be compared.

Enrollment

60 patients

Sex

All

Ages

20 to 70 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • kidney transplant recipient

Exclusion criteria

  • allergic history to dexmedetomidine
  • refractory bradycardia < 60 bpm despite treatment
  • severe atrioventricular block (2nd and 3rd degree)
  • previous operation of tongue

Trial design

Primary purpose

Basic Science

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Single Blind

60 participants in 2 patient groups

Control
No Intervention group
Description:
Routine anesthesia care for kidney transplant
Dexmedetomidine
Experimental group
Description:
Routine anesthesia care for kidney transplant and perioperative intravenous infusion of dexmedetomidine
Treatment:
Drug: Dexmedetomidine

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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